Mechanical Engineering : Process Instrumentation And Control QUESTIONS AND ANSWERS :: part2 : 1 to 5
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
1.Which is not correct about load cells used to measure weight/force : |
| accuracy of the order of 0.01 to 1% |
| rugged and compact construction |
| no moving parts and negligible deflection under load |
| low resistance to side load and low overload withstand |
| hermetically sealed and thermal compensation. |
2.Which type of device is suitable for dynamic force measurement: |
| lever balance |
| spring balance |
| proving ring |
| piezo-electric transducer |
| all of the above. |
3.When the pressure medium to be measured is air or gas, the pipe is made to rise continuously to the gauge, so that: |
| no air or vapour can collect in pipe |
| any moisture can be drained ' |
| moisture does not come in contact with elements of sensor/gauge |
| moisture can condense to form seal of water |
| static head error due to moisture is eliminated. |
4.Thermal expansion of a solid is employed in : |
| thermocouple |
| resistance thermometer |
| bulb thermometer |
| bimetal element |
| zener diode. |
5.Pick up false statement about liquid-in-metal thermometers : |
| remote indication of temperature can't be given |
| error is produced if capillary passes through hot zone |
| error also occurs if instrument base is at high ambient temperature |
| error can also creep in by the head of the liquid if the bulb is installed either above or below the Bourdon |
| these are used for industrial applica-tions where accuracy is not so impor-tant. |
More Process Instrumentation And Control QUESTIONS AND ANSWERS available in next pages
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